Coke-oven-door machine



1931- R. CHRISTIANSON 7 CORE OVEN DOOR MACHINE 5, 1927 4 Sheets-Sheet 1 Filed Dec.

INYENTOR. Rains/mason. M1035 b 1931- R. CHRISTIANSON Y COKE OVEN noon MACHINE F iled Dec. 4 Sheets-Sheet 2 N. WWWWWMWWMWMMW u. a ==M======= E INYENTOR. E Cbr/sflanson. ATTORZE Feb. 24, 1931. h. CHRISTIANSON v1,793,456

COKE OVEN DOOR MACHINE Filed Dec. 5, 1927 4 Sheets-Sheet 5 IgWENTOR. R Chr/sr/anson.

R. CHRISTIANSON COKE OVEN DOOR, MACHINE 5, 1927 4 Sheets-Sheet 4 Filed Dec.

INVENTOR. RUM/52700500 Y 3 7 A TOR2EY? Patented Feb. 24, 1931 Barnard) CHRISTIANSON, or PITTSBURGH, rENNsYLvAnIA, ASSIGNOR To THE Kor- PER-S COMPANY, A CORPORATION OF DELAWARE ooK -ov N-nooR M GHINEQ Application filed December '5, 1927. Serial No. 237,605.

My invention relatesto door machines for coke ovens and particularly to machines for manipulating the doors of the coke side of a battery of horizontal cokingretort ovens.

va An objectof my invention is to provide a simple and efficient mechanism for removing doors from coke ovens and actuating them to such position that the machine and the door that has-been removed may be easily moved 1o out of alinement with the corresponding oven.

A further object of my invention is to provide a mechanism for removing doors from coke ovens and manipulating them within the relatively small'clearances by which such operations are ordinarily limited.

A further object of my invention is to provide a mechanismtor removing and replacing coke-oven doors that shall remove the door to a relatively remote position from the oven and at the same timeretain the mechanism machine. V c A still further object of my invention is to provide a'door machine whichplaces the coke substantially within the limits of the door oven doors in convenient position for cleaning and which furnishes a substantially -unobstructedpassageway t-herethrough for an operator. 7

- Door machines of the ated' in several Ways to remove coke-oven doors from the coke side of .a coke-oven battery. In certain ofthese machines, the movable mechanism for controlling the cokeoven (10 1s? has reciprocated in alinement Wit-lithe oven and transversely tothe door machine toremove or to. replace the doors. Such operation is inconvenient and undesirable byreasonof the necessary length of the mechanism. and the fact that it may project beyond the frame of the door machine in which case it 'may strike other objects or apparatus during the movement. of the door machine-along the side of the battery. Other door machineshave operated to swing the door through a vertical arc in order to avoid the reciprocating mechanism referred to above. Such operation is attended with considerable'difticulty and" the mechanism for controlling the doors is complicated and expensive,

prior art have oper- 'Numerous other-arrangements have been proposed but-substantially all of them operate withone or more of the disadvantages referred to above and it is an objectof the present invention to provide a machine, in which these constructionaldifficulties and operating inconveniences are entirely avoided. 1

In accordance with the present invention, I provide a door machineni which, by means of a simple mechanism, the door to be re moved is first'unlatchedand is then withdrawn in'a path that comprises relatively short straight line and a curved' path in which the door is swung horizontally through an angle of approximately. 90. The. carriage or the mechanism for manipulating the door is also turned through an angle of 90, whereby itis actuated from a position transverse to the door machine to one in aline- I ment therewith whereby the door carriage is substantially-entirely within the limits of the door machine.

Ingeneral, the Inechanism by' means of Y which the doors are controlled comprises two door-supporting hooks that eXtendfrom the carriage, and Which maybe operated to unlatch the door. The carriage is mounted to somewhat-overhang the main body portion of therdoor machine by two horizontal links of different lengths. When thecarri'ageois caused to move to withdraw the door, it first moves in a' comparatively straightjline,

whereupon the diflerence in length of the v pivotally connected links causes it to be swung through a curvedpath and to assume a position substantially inalinement with the door machine and withinfthe limits of the frame of the latter. Thema chine may then be moved out of alinement' with the K coke oven from which the door has been removed without danger that the carriage or the door will strike any projecting apparatus along the side ofthe battery.

The details of my invention will be described in connection with ing drawings, in which 7 v I Figure 1 is a view in transverse vertical section of a battery of horizontal coking retort ovens and associated apparatus including the door machine of my invention;

the accompany-v Fig. 2 is a top plan view of the door machine, parts being broken away, a portion of a coke oven being shown in section;

Fig. 3 is a, view in side elevation of the door machine of Fig. 2;

Fig. 4 is a view in end elevation of the door machine of Fig. 2, parts being broken away, a portion of a coke even being shown in outline and r Fig. 5 is an enlarged sectional view taken on line VV of Fig.4.

Referring particularly to of coke ovens 2, only one of which appears in the drawing. Each of the ovens 1s provided with the usual top 3, floors 4 and removable doors 5 and 6 that are located, respectively, on the pusher side and the coke sideof the battery. Each oven is further provided with an ascension pipe 7 that is connected to a collecting main 8. v

A larry car 9 of usual construction supplies coal for charging the ovensthrough the charging holes 10. The battery is also provided with the usual regenerators 12, producer gas mains 13, coal gas mains 14 and waste gas mains 15. A quenching car 16,

which operates along the side of the battery,

, the form ofa structural framework 21that is mounted on wheels 22 for operation on the track 20. The door machine 19 is moved along the track 20 by means of an electric motor 23 that is suitably geared to the driving wheels of the door machine'and that is provided with a controller 24. A movablecarriage 25 is mounted upon and supported from the forward end ofthe door machine by means of two. pivotally-mounted bifurcated arms or links 26 and 27. The links 26 and 27, which are pivotally connected to the carriage at spaced points, are also pivotally connected to the main body portion of the door machine for. pivotal movement. The link 26 is materially longer than the link 27 whereby endwise movement of the carriage will cause it to change its alinement.

, The inner, end. of-the link27 is rigidly connected to a bevel gear 28 that is rotatably mounted on a shaft 29and is operatively connected through a train of gear mechanism 30 to an electric motor 31. The link 26 is freely movable at its respective pivotal connections. V V

Fig. 1, a battery of horizontal coke ovens comprlses'a series The carriage 25, which corresponds to the usual mechanism known as a door extractor, has vertically-extending portion 33, to which the bifurcated links 26 and 27 are secured and which also supports two horizontalarms 34 and 35 that are provided with hooks for engaging the frames of the doors 6. The arms 34 and 35, which are connected by a rod 36 for simultaneous movement, are pivotally mounted at 37 and-38, respectively.

'The arm 34 is-pi'ovided with a crank arm corresponding direction, the'nut 41,'Which cannot move axially, causing the shaft 40 to be reciprocated correspondingly, as will be readily understood.

It maybe assumed that it is desired to removethe-door 6 of the oven 2 of Fig. 1 and that the door machine 19 has been actuated to such position that the carriage 25 and its connected parts are in alinement with the door to be removed. Theioarriage 25 andits connected parts, including the arms 34 and .35, are caused to move toward the door 6 by operation of the'motor 31 through its controller 45 that is located for convenient operation by the operator., The motor 43 is then operated by means of its controller 46 to raise the arms 34 and 35, whereupon the usual latches 47 are lifted from engagement with angle irons on the buckstays 48 and the hook portions of the arms engage the projections 49 on the door. The motor 43 will stall before the arms assume the entire weight of the door. therebyi precluding lifting of the door which is undesirable.

. Under these conditions, the arms 34 and 35 do not lift the door but are-in position to support its weight when it is withdrawn from the oven, the sill 'of the door frame being slightly inclined downwardly to provide clearance at thebottom ofthe door. The motor 31 is nowenergized to operate through the gear mechanism comprising the bevel gear 28 to rotate the link 27 about the shaft 29 to withdraw the carriage 25 and the door 6 substantially horizontally along the lines represented by the curves 50and51 in Fig. 2. It will be noted that the movement of the door is through a horizontal path that is at first approximately astraight line and it is then caused to swing through an angle of substantially 90 to' the position indicated.

by dotted lines. The carriage 25 occupies a corresponding position in approximately the center of the-door machine and'with only a small portion projecting beyond the front of the latter.

- The doormachine .19, together with the door 6 that has beeirremoved, is then actuated along-the track 2-0 out of al-inement with the woven in order thatthe coke may be discharged therefrom. In case the coke guide is attached to the door machine, the latter will he moved in a forward direction to such position that the coke'guide is in alinement with-theoven- J V The position of the door on the machine with its inner side pnesentedoutwardly is from pitch, or other adherent material which might prevent gas-tight sealing of the doors. hen it is desired to replace the door 6 1n operative position, the'operation described above occurs in reverse order. The door machine is moved along the track 20 to theposition in which it is illustrated in Fig. 2. The motor 31 is then operated to cause the carriage 25 with the door 6 to move horizontally from the dotted-line position along the curves 50 and 51' until thedoor has been in-' serted in the end of the oven. The motor 43 is then'operated to lower the arms 34: and 35 to permit the door to be latched in'position.

' It will be noted that the door machine of my invention operates to withdraw and to replace coke-oven doors through a path that insures that the door has the proper movement with respect to the framework at the end of the oven during the initial portion of its withdrawal and that it is thereafter operated through such angle as will insure that its stationary position upon the door machine is one wherein it will be out of alinement with any obstruction or projecting apparatus of the coke oven. The straight-line portion of the horizontal path of movement also insures that the doors may be inserted easily and conveniently to their operative positions. In case self-sealing doors are used, this path of movement is essential to the operation of the door without damage to the sealing means.

The position of the mechanism is at all times such that a passageway through the machine is provided for an operator. The door is accessiblefor inspection and cleaning.

The foregoing and other advantages will be apparent to those skilled in the art of operating coke ovens.

I claim as my invention:

1. Coke-oven apparatus comprising a removable coke-oven door and a door machine for removing said door, said door machine having means for successively unlatching said door, withdrawing it in substantially a straight line and swinging it through an angle of substantially said means comprising a door-engaging mechanism, spaced members of unequal length for pivotally supporting said mechanism and actuating means for said mechanism. whereby the latter, upon movement upon its supports, is withdrawn and swung as aforesaid. I

2. Coke-oven apparatus comprising aremovable coke-oven door and a door machine for removing said door, said'door machine having a mechanism for unlatching and supporting said door and means comprising a carriage and two spaced arms of unequal length for pivot-ally supporting said carriage for successively withdrawing said mechanism in a substantially straight line and then swinging it through an angle of substantially Zip-Coke-oven apparatus comprising a removable coke-oven door and a door machine for removing said'door, said door machine having means for successively unlatching said door, withdrawing it in substantially a straight line andswinging it'through an angle of substantially 90, saidmeans comprising a carriage for supporting said door and means for pivotally supporting said carriage on two spaced axes atdifferent distances from said carriage. V v

4. Coke-oven apparatus comprising a movable carriage having means adapted to unfasten a coke-oven door, :means for movably supporting said carriage comprising, two links of unequal length that are pivotally connected to said carriage and to fixed supports.

.5. Coke-oven apparatus comprising'a door machine-having a movable carriage provided with mechanismadapted tocontrol the fastenings of a coke-oven door, said carriage having two spaced pivotal connections for movement about two axes at radii of different lengths whereby said mechanism is caused to traverse a curved path upon movement of said carriage. 7

6. Coke-oven apparatus comprising a door machine for the'coke side of-a coke-oven bat-- tery, said door machine 7 having a movable carriage provided ;with door-supporting mechanism, means comprising two spaced arms of unequal length pivotally connected to said machine and to said carriage for moving said carriage'horizontally through a path comprising an, approximately straight line and a curve, and mea machine, i V v 7. Coke-oven apparatus comprising adoor machine for the tery, said door machine having 'a movable carriage provided with, door-supporting mechanism, said carriage being mounted on two swinging arms of different lengths pivots ns fornnovingsaid' coke side of a coke-oven batmachine for the coke sideof a coke-oven battery, said door machinehaving a movable carriage provided with door-simporting mechanism, said arriage extendingin alinement with a coke-oven when indoonengaging position, two arms of different lengths having spaced pivotal connection to said carriage and to said machine and means for actuating one of said arms about its pivotal support on said machine.

9. Coke-oven apparatus comprising a door machine having a movable carriage carried by two horizontal arms of difierent lengths that are pivotally connected to said carriage and to said machine for'horizontal movement and a power device connected to one of said arms, the pivotal axes being so related that upon movement of said one arm, said carriage is moved through an angle of approximately 10. Coke-oven apparatus comprising a door machine for the coke side of a coke-oven battery and having a main body portion mounted for movement along a coke-oven battery, a movable'carriage and arms pivotally supporting said carriage and extending beyond one end of said main body portion, said carriage extending transversely of said machine when in door-engaging position and said arms being of such unequal lengths that When said carriage moves away from said oven it assumes a position at right angles to its doorrengaging position.

11. In a door-handling machine for coke ovens or the like, a carriage adapted to be p0- sitioned opposite the front vvall of an oven, a

d'oor carrier on said carriage comprising means for grasping a door in its closed position, a vertical pivot support for said carrier, means for swinging said support about a vertical axis spaced therefrom and fixed with respect to the carriage, a horizontally swinging link'with its ends connected to said carrier and to said carriage respectively, said parts being so positioned and proportioned that the movement of the carrier from closed door position is in substantially a straight line until the door clears the door frame and thereafter causes the carrier to assume a position approximately at right angles to the closed door position.

In a door-handling machine for coke ovens or the like, a carriage adapted to be positioned opposite the front Wall of an oven, at door carrier on said carriage comprising means for grasping a door in the closed position of the latter, means for supporting and operating said carrier comprising a pair of horizontal links connected to the carriage and the carrier, said links bein spaced apart horizontally, and means for applying power to swing one of said links, said links beingpost tioned and proportioned to cause movement of the carrler from'closed door positlon substantially in a straight line until the door clears the door frame andxthereafter-in a curved path to a position approximately at 

